XC9140A421MR-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9140A421MR-G is a boost switching regulator IC manufactured by Torex Semiconductor. It provides a fixed positive output voltage of 4.2 V with a maximum output current of 100 mA. The device operates from an input voltage range of 900 mV to 5.5 V and features a low operating supply current of 6.5 uA. Packaged in SC-74A (SOT-753) format, it is designed for efficient DC-DC conversion in space-constrained applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Boost switching topology for step-up voltage conversion
• Fixed 4.2 V output voltage regulation
• Ultra-low operating supply current of 6.5 uA
• Wide input voltage range supporting low source voltages

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronics requiring voltage step-up
• Single-cell lithium-ion battery power management systems
• Low-power sensor nodes and IoT devices
• Applications necessitating compact SMD packaging solutions

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MR-G' against official Torex documentation to confirm package type and environmental compliance. Ensure input voltage requirements align with the 900 mV minimum specification. Cross-reference the datasheet for thermal performance limits within the SC-74A footprint to prevent overheating during operation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 4.2 V output is required from sources below that threshold. The 100 mA current limit suits light loads, while the 6.5 uA quiescent current supports extended battery life. Verify compatibility with the SC-74A footprint and ensure the application does not require shutdown control or adjustable output settings.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the XC9140 series of high-efficiency DC-DC converters from Torex Semiconductor. The series focuses on miniaturization and low power consumption for mobile and wearable technologies. The 'A' designation typically indicates specific electrical characteristics or revisions within the product family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check Torex's official substitution list for direct equivalents. Consider parts with similar boost topologies if current or voltage requirements differ. Verify pinout compatibility before replacing to avoid circuit redesign.